Duplex force-pump.



PATENTEDAPR. 28, 1903.

I E. B. CROY.

DUPLEX FORGE PUMP.

APPLICATION FILED JULY 3, 1902. I/ l N0 MODEL.

lm, 1 l,

v I lilll ICI -provide a simple AFig. 2 is a side elevation of thesame.'

EDWARD B. oaorgon LIMA, onto..- l e ou FLEX F-o ace-Pu MP.

SPECIFICATION forming part of Letters Patent No. 726,650, dated Aprilas, 1903. Appleman riga .my 3,1902, serrano. 114,251. '(Nomo'ael.)

To @ZZ when@ it may concern:

Be itknown that I, EDWARD B. CROY, a citi,- zen of the United States,residing at Lima, in the county of Allen and State of Ohio, haveinvented new and useful Improvements in Duplex Force-Pumps, of which thefollowing is a specification. Y

This invention relates to a duplex force` pump; 'and the object ofltheinventon is tov kind which is light, yet thoroughly st rong,andcapable of manufacture at a low cost. e

The improved pump includes in its construction a base having a pluralityof cham` bers, one of which Other objects and advantages of the'invens,

tion will be Aset forth in the following description, while the noveltythereof will constitute the basis of the claimssucceeding suchdescription, and said invention is clearly illustrated in theaccompanying drawings, forming a part of this specification, and inwhicha Figure 1 is a'sectional front elevation of a duplex force-pumpincluding my invention. Fig. 3 is a sectional plan view of the base ofthe puma `x Like characters refer to like parts in all the figures ofthe drawings.

Referring to the drawings, the numeral 1 indicates the base ofmyimproved pump, and itk maybe made from For example, it may consist ofa casting suitably galvanized. The base 1 contains the side chambers 2and an intermediate chamber 3, the said side chambers having inlets4,

lcontrolled by the flap-valves 5 of some suitable construction. Thechambered base, which is adapted to be mounted in a well or cistern foreffecting the discharge of water therefrom, rests upon the bed or block5n of wood, the

and effective device of thisr Y is intermediate the others and isconnected thereto byports", casings for plungers connected with saidbase, and al peculiar form of duplex valve in the inter'-v to whichintermediate` right is united to the any suitable material.

Aparts being suitably united, forexample, as follows:v The oppositesides of said l base have depending lugs or ears 6, countersunk intonotches in the upper opposite ends of the block or b'ed 5 and secured'thereto by screws or the like. Inthe upper side of the block 5a areformed the semicircularchanbelow the inlets 4. It `'will begunderstoodthat the channels 7'l extend entirely across the block 5, so'that-watercanA enter the same from the'well or cistern and, enter .the inlets ythe chambers 2 ofthe 65 The walls be- 4, and consec'luently chambered orhollowbase 1. tweenthe intermediate Ychamber 3 ,andthe o-uter'chambers 2have ports t5, vertically disposed, and controlled by-a duplex valvehereinafter more 'particularlydescribed.

' nels 7adapted to register with and'situated 6o Thevr cylinders orbarrels 9, which are/'ver-UK tically disposed,are screwethreaded orother-1 wise fitted intoopeni'ngs in the upper side of the base 1, so asto communicate with .the

respective chambers 2 therein, and may be 75 made 'of any suitablematerial-for example, brass tubing. These cylinders or barrels containpistons or plungers 10, from Which the rods 11 extend upward, said rodsbeing united atA their upper ends to also with the ends of the parallelrocking levers 13, fulcrumed at' their centers to a y sleeve 132, whichunites the lowermost sections of the dischargepipe 14.l Said disswivels12, connected 8o charge-pipe, which is of small diameter, is`

I' tapped into a `bushing 20, threaded intothe base l, substantiallycentrally thereof, `and it may be made of any suitable kind of metal,preferably galvanized. The swivel 12 on the jointed at its upper end toan actuatingdever, (notv shown,) by which the levers 13 can be rocked toreciprocate the stems 11, and consequently the plungers vation of theWater.

The numeral 16 denotes material of some suitable kind, such as leather,secured centrally, as by means of a plate l17, to the bottom oftheintermediate chamber 3, which, it Willbe y communication with thedischarge-pipe 14. The ends 18 of this sheet ofleather lent material 16are free and extend normally upward ina transverse direction from l 10,to cause the eleor equiva-y connecting-rod 15, 9o

.95 a sheet of Iiexible seen, isv in direct roo ,opening said the bottomof the base and constitute valves for the discharge-ports 8.y In orderto insert the valve-sheet 16 into the base 1, I remove the bushing20,which closes a relatively large opening in said base, and throughWhich readily passed. The width of the plate 17 is a trifle less thanthe space between the side walls ofthe chamber 3, and said plat-e tsfla'twise against the upper side of the sheet 16, so as to leave theends of said sheet free. To hold the plate, and consequently the sheet,in place, I pass the bolt 21 through registering perforations therein,the end of said bolt being adapted to receive a nut, and thereby l holdthe several-parts in proper relation, and

.then be put into place, after 'which the bolt 21 willbe passed throughthe registering perforations in said parts. The free portions 18 of theysheet willthen close the dischargeports 8. I Upon the elevation ofeither plunger 10the inlet-valve below the same will b e opened, so asto admit a supply of water into the chamber 2 below the same, and whensaid plunger is depressed said inlet-valve will be closed and the waterin said chamber will be forced through the port 8 and up thedisvalve-sheet land its plate can be 'masso charge-pipe 14, the valve 18being opened by the outflowing water.

Having described the invention, what I claim is l v In a pump of theclass described, a base hav- -ing a plurality of ,chambers one of whichis intermediate the others and is connected therewith by ports, theintermediate chamber having an enlarged outlet in its upper side, abushing threaded into said outlet, a discharge-pipe threaded into saidbushing, barrels containing plungers, connected with said outerchambers, said outer chambers having inlet-ports provided with valves,Va. block upon which said base is mounted, having transverse channels inits upper side in registrationv with said inlet-ports, a sheet offlexible material tted against the bottom of the intermediate, chamber,a plate bearing flatwise against said sheet of material'centrallythereof, the ends of 'said sheet being free and constituting valves forsaid firstmentioned ports, and the said outlet being of a size tofreelyreceive said plate, whereby the plate can be inserted Vthrough theoutlet into the intermediate chamber, and a bolt passing throughthe'plate, sheet, and bottom of the base,A the head of the bolt beingtted in a concavity in the upper side of said block.

In'testimony whereof I have hereunto set my hand .in presence' of twosubscribing witnesses.

, EDWARD B. CROY. lVitnesses:

ROY WETHERILL, A. L. BYRD.

